[PATCH] ppc64: add MODALIAS= for vio bus

From: Olaf Hering
Date: Sun Oct 30 2005 - 16:39:09 EST


A non-broken udev would autoload also the drivers for devices on the
pseries vio bus, like ibmveth, ibmvscsic and hvsc. This is similar to
pci, usb and ieee1394:

/lib/modules/`uname -r`/modules.alias
alias vio:TvscsiSIBM,v-scsi* ibmvscsic
alias vio:TnetworkSIBM,l-lan* ibmveth
alias vio:Tserial-serverShvterm2* hvcs

/events/debug.00004.pci.add.1394:MODALIAS='pci:v00001014d00000188sv00000000sd00000000bc06sc04i0f'
/events/debug.00005.pci.add.1509:MODALIAS='pci:v00008086d00001229sv00001014sd000001FFbc02sc00i00'
/events/debug.00026.vio.add.1519:MODALIAS='vio:TserialShvterm1'
/events/debug.00027.vio.add.1446:MODALIAS='vio:TvscsiSIBM,v-scsi'
/events/debug.00028.vio.add.1451:MODALIAS='vio:TnetworkSIBM,l-lan'

modprobe -v vio:TnetworkSIBM,l-lan
insmod /lib/modules/2.6.14-20051030_vio-ppc64/kernel/drivers/net/ibmveth.ko


Signed-off-by: Olaf Hering <olh@xxxxxxx>

arch/ppc64/kernel/vio.c | 27 +++++++++++++++++++++++++++
1 files changed, 27 insertions(+)

Index: linux-2.6.14-olh/arch/ppc64/kernel/vio.c
===================================================================
--- linux-2.6.14-olh.orig/arch/ppc64/kernel/vio.c
+++ linux-2.6.14-olh/arch/ppc64/kernel/vio.c
@@ -21,6 +21,7 @@
#include <asm/iommu.h>
#include <asm/dma.h>
#include <asm/vio.h>
+#include <asm/prom.h>

static const struct vio_device_id *vio_match_device(
const struct vio_device_id *, const struct vio_dev *);
@@ -255,7 +256,33 @@ static int vio_bus_match(struct device *
return (ids != NULL) && (vio_match_device(ids, vio_dev) != NULL);
}

+static int pseries_vio_hotplug (struct device *dev, char **envp, int num_envp,
+ char *buffer, int buffer_size)
+{
+ const struct vio_dev *vio_dev = to_vio_dev(dev);
+ char *cp;
+ int length;
+
+ if (!num_envp)
+ return -ENOMEM;
+
+ if (!vio_dev->dev.platform_data)
+ return -ENODEV;
+ cp = (char *)get_property(vio_dev->dev.platform_data, "compatible", &length);
+ if (!cp)
+ return -ENODEV;
+
+ envp[0] = buffer;
+ length = scnprintf (buffer, buffer_size, "MODALIAS=vio:T%sS%s",
+ vio_dev->type, cp);
+ if (buffer_size - length <= 0)
+ return -ENOMEM;
+ envp[1] = NULL;
+ return 0;
+}
+
struct bus_type vio_bus_type = {
.name = "vio",
+ .hotplug = pseries_vio_hotplug,
.match = vio_bus_match,
};
--
short story of a lazy sysadmin:
alias appserv=wotan
-
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